Very bad. The egg is protein. If you eat on an empty stomach, it will be converted into glucose, so it is meaningless to eat eggs. You should eat some bread or something before eating eggs. Like milk and eggs, pears are cold foods and should not be eaten in the morning.

And warm water is of little use, because it is glucose to be absorbed. If he is hungry in the morning and only eats eggs, he will break them down, protein. Water is not glucose, so drinking water is useless.